Section 10 of the original white paper is about privacy. It imagined bitcoin transactions being public, but still about as private as stock trading transactions

Section 10 of the original white paper is about privacy. It imagined bitcoin transactions being public, but still about as private as stock trading transactions that are published on a ticker tape. http://bitcoin.org/bitcoin.pdf http://bitcoin.org/bitcoin.pdf Bitcoin transactions turned out to be a great deal less private than that, because separate transactions from the same wallet can be linked via the change outputs (unlike separate trades on a ticker tape).